The Population Figures provide a quantitative measurement of the population resident in Spain, in each Autonomous Community, in each province and on each island (in the island province), broken down according to basic demographic characteristics, such as sex, year of birth, age, nationality and country of birth. The population series is obtained from the intercensus population estimates for the 1971-2012 period, and from the Population Figures operation from 2012 onward.

This data is used as reference population figures in all of the statistical operations of the INE (surveys, National Accounts, indicators, etc.) and is transmitted on an international level as the official population data for Spain, for all intents and purposes.